Microleakage effect of in-office bleaching on two types of nanohybrid composites with or without surface sealer.

Background: Bleaching is a highly common method used nowadays to treat tooth discolouration because it is a significant cosmetic issue, particularly with anterior teeth, however bleaching itself results in microleakage.

Objective: This study aims to evaluate the impact of in-office bleaching on class V restoration microleakage with type 1 and type 2 composite restorations.

Methods: Three hundred and twenty healthy, caries-free removed human anterior teeth were used in this in-vitro study.

Impression materials and techniques used in fixed prosthodontics: A questionnaire-based survey to evaluate the knowledge and practice of dental students in Riyadh city.

Introduction: Among the several materials and techniques being used in fixed prosthodontics, impression materials and techniques were the major focus of this study. These materials are available in the market to be used by dental practitioners. However, their choice depends on certain factors, which include their properties, advantages, disadvantages, and cost.